.bottom_info {
  padding: 1.4rem;
  width: 100%;
  text-align: center;
  background-color: #fff;
  border-top: 1px solid #ddd;
  color: #777;
  font-size: 1rem;
}
.bottom_info .bottom_animate {
  display: flex;
  justify-content: space-around;
  align-items: flex-end;
  height: 4rem;
}
.bottom_info .bottom_animate li {
  width: 2rem;
  height: 3.125rem;
  border-radius: 2px 2px 0 0;
  filter: contrast(15) hue-rotate(90deg);
  animation: dance 1s infinite linear;
  opacity: 0.7;
}
.bottom_info .bottom_animate li:nth-child(2) {
  animation-delay: -0.2s;
}
.bottom_info .bottom_animate li:nth-child(3) {
  animation-delay: -0.1s;
}
.bottom_info .bottom_animate li:nth-child(4) {
  animation-delay: -0.32s;
}
.bottom_info .bottom_animate li:nth-child(5) {
  animation-delay: -0.77s;
}
.bottom_info .bottom_animate li:nth-child(6) {
  animation-delay: -1s;
}
.bottom_info .bottom_animate li:nth-child(7) {
  animation-delay: -1.2s;
}
.bottom_info .bottom_animate li:nth-child(8) {
  animation-delay: -1.4s;
}
.bottom_info .bottom_animate li:nth-child(9) {
  animation-delay: -1.2s;
}
.bottom_info .bottom_animate li:nth-child(10) {
  animation-delay: -0.7s;
}
.bottom_info .bottom_animate li:nth-child(11) {
  animation-delay: -0.3s;
}
.bottom_info .bottom_animate li:nth-child(12) {
  animation-delay: -0.5s;
}
.bottom_info .bottom_animate li:nth-child(13) {
  animation-delay: -0.2s;
}
.bottom_info .bottom_animate li:nth-child(13) {
  animation-delay: 0;
}
@keyframes dance {
  25%,
  75% {
    height: 50%;
    filter: contrast(15) hue-rotate(180deg);
  }
  50%,
  100% {
    height: 100%;
    filter: contrast(15) hue-rotate(360deg);
  }
}
